baber/WOPTO huggingface dataset:
Patent GB-585680-A (GB)
Title: Improvements in guards for presses and similar machines
IPC: F16P3/04
Filed: 1944-01-26
Abstract: 585,680. Machinery guards. BROUGHTON, G. J. Jan. 26. 1944, No. 1440. [Class 80 (iv)] In presses and similar machines a pair of brackets 10 on the machine frame carry a rotatable shaft 11 on which are pivoted side bars 12 which are prevented from being swung away from the machine either by a bolt 13 or a releasable clip. The side bars are connected together by horizontal rods 15 which leave a space 16 through which the operator can obtain access to the machine table. The guard proper comprises an upper frame 19 fixed on a shaft 18 rotatably carried by the bars 12 and having pivoted on a rod 21 at its lower edge a lower frame 20 comprising two side members 23 the lower rods of which are connected by a rod 24 whose ends are slidable in guide slots 25, Fig. 1, in the bars 12, the guard being closed by pulling down this rod. When open, both guard members extend inwardly as in Fig. 1. When released, the guard is opened by a spring 27 acting upon an arm 26 on shaft 18. An arm 29 secured to shaft 18 is connected by a link 30 to an arm 31 pivoted on shaft 11, and fixed on this shaft is another arm 32 carrying a scotch 33 adapted to enter a notch 34 in a disc 35 on the end of the crankshaft. The arms 31, 32 are normally locked together by a spring-pressed pin 36 engaging a hole in arm 32. At the other end of the shaft is an arm 37 which, when the guard is open, prevents engagement of the clutch. Moving the guard to closed position brings the scotch out of the notch 34 and allows the clutch to be engaged. While the machine is running, the contact of the scotch with the periphery of the disc prevents opening of the guard. The machine comes to rest after one revolution with the scotch brought again into the notch by the spring 27. In a modification, the side bars 12 are bent rearwardly and the arm carrying the scotch is secured to a shaft carrying an apertured plate to control clutch movement. Further, the shaft 11 may be provided with an arm carrying a stud adapted to engage the machine frame and prevent backward movement of the side bars.
Patent GB-247169-A (GB)
Title: Improvements in or relating to developing photographs
IPC: G03C5/50
Filed: 1926-01-19
Abstract: 247,169. Soc. Mondiale du Film en Couleurs Keller-Dorian. Feb. 9, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Developing; reversing.-In the process of producing positives directly by reversing a negative made in a silver sensitive layer of normal thickness, it is usual to over-expose the layer when making the negative, in order to obtain a good positive. This is avoided according to the invention by adding to the developer a solvent for the silver halide. of such strength that a good positive is obtained when the negative has received the normal exposure. Hyposulphite is preferred, and may be used with any developer, for example glycin, of which it forms from 0.5 to 1 per cent of the strength; but sulphocyanide, cyanide, and ammonia may also be used.
Patent GB-561667-A (GB)
Title: Method of and means for cutting lengths of metal tubing or the like to produce shaped ends thereto and at a desired angle
IPC: F16L41/06
Filed: 1943-01-30
Abstract: 561,667. Drilling. HANCOCK, G., and BLINKHORN, F. B. Jan. 30, 1943, No. 1618. [Classes 83 (ii) and 83 (iii)] A jig, for use in cutting tubes by an annular cutter of.the required shape to abut other tubes for welding into a frame, has adjustable means for guiding the drill at the required angle of the tube which is clamped against a locating stop. In making struts 42, Fig. 7, to be welded between tubes 43, 44, lengths of tube each sufficient to form the struts are cut from tubing, both ends being shaped to fit the tube 43 ; a single cut then suffices to divide each length forming simultaneously the ends as required at 44. In forming the first end, the short piece cut off may serve as an end stop 39, Fig. 4, to which is welded a piece of tube 41 to engage and locate the cut end of the work 24. The stop 39 is bolted at 40 to one flange of an angle bar 33 that is bolted to the upper member 13 'of the jig provided with seating surfaces 25, Fig. 3; coacting, to clamp the work, with corresponding surfaces 26 on exchangeable blocks 27 dowelled to the lower member 14 of the jig for clamping by screws 29. The jig parts are pivoted at 15 and the part 14 has a handle 20 and pin 19 for engaging a pivoted latch 16 spring controlled at 18. A bracket 11 pivoted at 12 to the jig part 13 has an arcuate slot 23 to pass a stud 22 fitted with a handled clamping nut. An index mark and graduation may be provided. The bracket carries a guide bush 9 for the tubular cutter which is preferably in the form of a crown saw. If the tubes 43, 44 are in mutually perpendicular planes, the stop 39 is turned through 90 degrees and is secured through the holes 49.
Patent GB-832587-A (GB)
Title: Improvements relating to declutchable shaft couplings
IPC: F16D23/06
Filed: 1958-01-17
Abstract: 832,587. Friction clutches. DAIMLERBENZ A.G. Jan. 17, 1958 [Jan. 17, 1957], No. 1726/58. Class 80 (2). In an axially engaged clutch having a friction synchronising ring to prevent full engagement until synchronism, the axially movable clutch part is connected to an axially fixed part by axial faces during disengagement and thrust producing faces during engaging conditions. A driving clutch member 10 is connected by camming balls 14 to a disc 11 to form a torsional vibration damper and/or an overload release coupling; the disc 11 having an internal conical friction surface 31. The driven member of the clutch comprises an axially movable member 21 carrying a split synchronizing ring 28 formed with radial cam surfaces co-operating surfaces on the member 21 which is carried by a bearing 20 on a shift collar 19. The member 21 is connected to the driven shaft 9 through meshing radial dogs 22, 23 and a ring 24 axially fixed with respect to the shaft. The dogs 22, 23 have axial faces 25 and inclined faces 26, 27, or these latter faces may be combined into a curved surface. The member 21 also carries a conical ring 38 co-operating with balls 17, loaded by springs 15, carried in pockets in the disc 11. A light spring 41 urges the shift collar 19 towards the engaging position. To engage the clutch, the member 21 is moved axially by the collar 19, releasing the faces 25 and engaging the faces 26 to produce an augmenting thrust; the member 21 also carries the ring 28 into partial engagement with the surface 31 and causes the balls 17 to move outwards against the springs 15. Due to the lack of synchronism between the face 31 and ring 28, the ring 28 tends to rotate and thus allows the cam surfaces to prevent contraction of the ring until synchronism is reached. At this stage the ring 28 contracts and allows the member 21 to move to the fully engaged position at which the surfaces 27 are in contact to provide higher thrust for holding engagement. For automatic engagement, the engine is accelerated until the balls 17 move outwards against springs 15 and the thrust of the spring 41 is then sufficient to initiate engagement. Decrease in engine speed allows the balls 17 to move the member 21 to a disengaged position. In a modification, the split ring 28 is replaced by a two-part synchronising ring having axially camming surfaces held together by hairpin springs. In a second embodiment the driven member in a conventional torsionally damped friction clutch plate, the synchronizing camming surfaces being formed on the rear of the pressure plate and on the pressure plate carrier.
Patent GB-702148-A (GB)
Title: Improvements in and relating to pilot's jettisonable cockpits
Inventor: GUPPY THOMAS GEORGE
IPC: B64D25/12
Filed: 1951-01-23
Abstract: 702,148. Chlorinated aryloxy compounds. FARBWERKE HOECHST AKT.-GES. VORM. MEISTER, LUCIUS & BRœNING. Oct. 11, 1950 [Oct. 25, 1949], No. 24875/50. Class 2 (3). [Also in Group IV (a)] Aryloxy compounds are obtained by condensing at least one monohydric phenol with at least 'one chlorinated aliphatic alcohol in an alkaline medium, e.g. dichloropropanol is condensed with phenol according to the equation : C 6 H 5 OH +CH 2 Cl-CH(OH).CH 2 Cl= C 6 H 5 -O-CH 2 -CH(OH)-CH 2 Cl + HCl Other reactants specified are isomeric cresols and xylenols, α- and #-naphthols, epichlorhydrin and tertiary dichloroisobutyl alcohol.
Patent GB-1335872-A (GB)
Title: Olefinic terpolymer compositions
IPC: C08L23/16
Filed: 1971-01-13
Abstract: 1335872 Vulcanizing elastomer compositions MONTECATINI EDISON SpA 13 Jan 1971 [14 Jan 1970] 1739/71 Heading C3P [Also in Division B5] Compositions comprising an ethylene/α-olefin/ polyene elastomer and a highly unsaturated rubber are vulcanized with at least 2À5 parts by weight of sulphur per 100 parts by weight of elastomers and an aryl guanidine compound as sole accelerator in a ratio of gram atoms of sulphur to moles of guanidine compound of at least 3 : 1, optionally together with zinc oxide, carbon black, stearic acids, fillers, plasticizers and/or stabilizers. The olefin copolymer elastomer may be derived from ethylene, propylene and hexadiene-1,4,2-methylhexadiene-1,5, cyclooctadiene, dicyclooctadiene, dicyclopentadiene, 6-methyl-4,7,8,9-tetrahydroindene or 5-ethylidene-2-norbornene. The highly unsaturated rubber may be natural rubber, polybutadiene, polychloroprene, polyisoprene, styrene/butadiene rubber or acrylonitrile/butadiene rubber. The accelerator may be di-o-tolyl guanidine, o-tolyl diguanidine, diphenyl guanidine or triphenyl guanidine. In examples mixtures of (1 and 2) ethylene/propylene/methyl tetrahydroindene terpolymers with natural rubber; and mixtures of ethylene/propylene/ ethylidene norbornene terpolymers with (3, 4, 7 and 8) natural rubber, (5) styrene/butadiene rubber and (6) acrylonitrile/butadiene rubber: are compounded with carbon black, zinc oxide, stearic acid and phenyl #-naphthylamine and covulcanized with sulphur and di-o-tolyl guanidine or diphenyl guanidine.
Patent GB-587849-A (GB)
Title: Improvements in and relating to rotary pumps, compressors and motors
IPC: F04C18/12
Filed: 1945-01-23
Abstract: 587,849. Roots' blowers. HOWARD, A. C. Jan. 23, 1945, No. 1774. [Class 110 (ii)] In a pump, compressor or motor of the Roots' blower type, comprising two crescent-shaped rotors each consisting of two cylindrical sectors 25, 26 of different diameters united by recesses 31, the two sectors are detachably secured together and are so constructed that each rotor is approximately in dynamical balance. The parts 25 and 26 are held together and on the shaft 17 by bolts 27 engaging in tapped holes 29. A key 30 is fitted. The part 25 may be made of a lighter material than the part 26 and may be hollow, as shown, preferably with an internal web 32. The wearing surface of a sector may be protected by a layer of harderwearing material, which may be electrodeposited. Sealing strips may be recessed in the sides of the sectors. The recesses 31, which provide clearance for the tips of the coacting rotors, are preferably of concave cylindrical curvature and may be left unmachined. A relief port provided with a spring-loaded valve, not shown, communicates the outlet chamber 23 with the inlet chamber 21.
Patent GB-847509-A (GB)
Title: Electric glass working
IPC: G05F1/32
Filed: 1957-01-17
Abstract: 847,509. Magnetic amplifiers. CORNING GLASS WORKS. Jan. 17, 1957 [Jan. 27, 1956], No. 1816/57. Class 40 (9). [Also in Group XXXV] In an auto-self-excited bridge rectifying transductor, external feedback is provided by D.C. control winding 1 and internal feedback by leakage through resistors R-3, R-4 across rectifiers 27, 32. These resistors, being variable, provide a gain-control means for the transductor. The transductor output is applied to the D.C. control winding 23 of a saturable reactor through a bridge rectifier SR-3, which isolates the transductor from the high inductance of winding 23. The reactor is in series with the supply to electrodes for heat-softening glass by Joule effect. As the glass softens its resistance decreases and this reflects a change into the primary voltage of T- 1, which voltage, when rectified, is applied to control winding 1. Control winding 2 may be supplied through variable means from an independent source, as shown, or independence on load current, through a current transformer (Fig. 3, not shown), or in dependence on the current in winding 23 (Fig. 4, not shown). Specification 570,747 is referred to.
Patent GB-246495-A (GB)
Title: Method and apparatus for the manufacture of gutter stones or similar curved mouldings from concrete
IPC: B28B7/08
Filed: 1926-01-22
Abstract: 246,495. Frenzel, T. Jan. 24, 1925, [Convention date]. Moulds; processes. -Concrete gutter &c. tiles involving a straight and a curved portion are formed by first moulding the curved portion with the straight mould portion in a substantially vertical position, then turning the mould until the straight portion is substantially horizontal and completing this portion, the mould being finally brought to a horizontal position and opened for the removal of the tile. As shown, the mould comprises a base portion carried by a support 5 and has hinged thereto the curved portion 1 and sides 3. In use, the mould is first turned to the dotted position and the concrete introduced into the curved portion 1 and stamped, after which the mould is turned over to the full position and the straight portion completed. In this position the support 5 rests upon a pivoted block 9. After moulding, the block 9 is turned aside to bring the support to a horizontal position, the mould 3 and the portion 1 being then opened for the removal of the tile. The mould is mounted upon a support 8 within a receptacle 7.
Patent GB-1013594-A (GB)
Title: Improvements in communication switching systems
IPC: H04M7/10
Filed: 1961-12-08
Abstract: 1,013,594. Automatic exchange systems. AUTOMATIC ELECTRIC LABORATORIES Inc. Dec. 8, 1961 [Jan. 30, 1961 (2); Oct. 17, 1961; Nov. 1, 1961], No. 1943/65. Divided out of 1,013,593. Drawings to Specification. Heading H4K. The class of service given to a subscriber is signalled to a controller which sets calls up over a crosspoint matrix, the class of service being indicated by pulses in the time slot of the subscriber on either or both of two multiplex highways common to the line circuits. The particular code of pulses put on the highways by each line circuit when it is scanned in the off-hook condition is determined by strapping between the line circuit and the highways. A third highway can be provided to signal that a subscriber is to receive incoming calls during night service. The highways are used to signal the on-off hook conditions of the line circuits. Specification 963,454 is referred to.
Patent GB-757590-A (GB)
Title: A hearing aid embodied in spectacles
IPC: G02C11/06
Filed: 1953-01-23
Abstract: 757,590. Hearing aids. ZAPELLONI, F. Jan. 23, 1953 [Jan. 25, 1952], No. 1964/53. Class 40 (4). All the electrical components of a hearing aid are housed in a side-piece of a spectacle frame. The receiver may operate either by bone conduction or by air conduction. Both side-pieces may be equipped with separate hearing aids. A bone conduction receiver 7, Fig. 1, is fitted at the end of a side-piece 3 the end being enlarged to house also a thermionic amplifier. The amplifier is controlled by switches 17, 18. A battery 12 is slipped through an opening 13 into the straight part of the side-piece and a microphone 6 is housed at the front end. The hinges 4 are provided with springs to press the receiver against the head. An air conduction receiver is coupled to the ear by a tube 10 and a plug 11, Fig. 2.
Patent GB-894281-A (GB)
Title: Improvements in illumination indicators for electric lamps
IPC: B62J6/02
Filed: 1958-01-21
Abstract: 894,281. Electric battery lamps. JEHU, V. J. Jan. 21, 1959 [Jan. 21, 1958], No. 1988/58. Class 39(2) [Also in Group XX] To give warning of the fall in intensity of the light source in an electric lamp, such as the bulb of a cycle lamp, a pair of filters are mounted in co-planar juxtaposition in the beam from the light source, one filter being of a neutral density so as to remain constant in colour with variation in intensity of the light source and the other being selective of the band of wave-lengths which fade first with decreasing intensity of the light source so that it will tend to match the colour of the neutral density filter at a predetermined value of the reduced intensity. The filters 3, 4 may be semicircular and juxtaposed along their diameters, being mounted on a circular light diffusing layer 6 at the centre of a normal lamp glass 2. Alternatively, one filter may be circular and the other annular. In the case of a red rear light, the filter 3 may transmit only red light and the selective filter 4 may transmit red and blue light but not the intermediate wave-lengths.
Patent GB-233016-A (GB)
Title: Improvements in or relating to pumps
IPC: F04B33/00
Filed: 1924-01-25
Abstract: 233,016. Holman, J. L., and Holman, A. T. Jan. 25, 1924. Lever-actuated pumps; concussion-preventing ; mountings ; double-acting piston pumps; materials, special; valves, arrangement of. - In a hand-operated pump suitable for ventilating tunnels &c. the cylinder 10 is surrounded by a jacket 38, which is enlarged at one side to form a valve chamber 49 and is positioned to provide inlet and outlet passages connecting the valve chamber to inlet and outlet conduits. The pump may be double-acting with the valves for both ends of the cylinder arranged in the one valve chamber. It is mounted on a base 12 which may consist of a light wooden framework provided with carrying crossbars 66. The piston may be actuated by a lever 25 pivoted to a plate 30 on the base and connected to the piston rod by a pair of rods 34 and wooden blocks 36. The ends of the barrel 10 may have buffers 24 to prevent shock.
Patent GB-656998-A (GB)
Title: Improvements in apparatus for hauling railway wagons
IPC: B61J3/04
Filed: 1949-01-26
Abstract: 656,998. Ratchet-operated winches. COLLIERY ENGINEERING, Ltd. (Gent, H.). Jan. 26, 1949, No. 2123. [Class 78 (v)] A wagon-hauling apparatus comprises a winch drum a for a haulage cable to be attached to a wagon on a rail track leading to the apparatus, and a detent-held ratchet wheel e mechanically connected to the winch drum and engaged by a pawl g on a lever arm connected to and rocked by a fluid pressureoperated piston and cylinder for step-by-step rotation of the winch drum. As shown, winch drum a, which pulls a wagon step-bystep along rails into a filling position, is fixed on spindle b mounted in dead eye bearings c on frame d and is operatively driven by fluidpiston l, which operates through connecting- rod k and lever i pivoted on spindle b to reciprocate pawl and to engage the latter with ratchet e so as to rotate the arm step-by-step. Detent g prevents back movement.
Patent GB-1088801-A (GB)
Title: Control circuit for d-c motors having dual series field windings
IPC: B60L11/18
Filed: 1966-01-17
Abstract: 1,088,801. Control of D.C. motors. I-T-E CIRCUIT BREAKER CO. Jan. 17, 1966 [Feb. 15, 1965], No. 2125/66. Heading H2J. A traction motor is energized from two D.C. sources 10, 11 through choppers 12, 13 and has two series field windings 16, 17 interconnected by inductors 19, 20 on a common core. The choppers are triggered alternately so that initially the sources are used sequentially and the fields are effectively in series, because the inductors 19, 20 have a high impedance (at the chopper frequency) due to their currents being in opposition. As the " on " time of the choppers is increased until they overlap, the sources operate in series and the inductor currents are no longer in opposition, thus reducing their impedance and so putting the field windings 16, 17 in parallel. The inductance of the circuit, increased if necessary by further inductors 50, 51, results in a sawtooth waveform enabling a current limit circuit (not shown) to be employed, which preferably switches on the inactive chopper when switching off the active one.
Patent GB-1351584-A (GB)
Title: Lock for furniture
IPC: E05B65/462
Filed: 1973-01-16
Abstract: 1351584 Releasable fastening HUWILWERKE GmbH 16 Jan 1973 [5 March 1972] 2168/73 Heading E2A A lock for furniture having a number of drawers which are releasably locked by a bar 6, includes also a housing 1 of rectangular shape, and a cylinder 2 mounted in the housing 1 and carrying a coupling member 3, the latter being provided with pins 4 which engage teeth 5 on the bar 6. The locking position of the cylinder 2 is determined by a projection 7 on the housing 1 which is received in a circularly arcuate recess 8 in the coupling member 3. The latter is provided with a circularly arcuate recess 10 which receives a projection 9 of the cylinder 2 therein. By inserting a key 15 into the lock, tumblers 11 are displaced. The cylinder 2 is then rotated by the key and moves relatively to the coupling member 3 until the projection 9 of the cylinder engages a shoulder of the recess 10 in the coupling member 3. The latter now rotates with the cylinder until the recess 8 in the coupling member is abutted by the projection 7 of the housing 1. The coupling member 3 transfers motion to the bar 6, via the pins 4 at the teeth 5, and the bar 6 moves respective bolts (not shown) of the drawers to effect the locking thereof.
Patent GB-1459241-A (GB)
Title: Data transmission system
IPC: G01D5/12
Filed: 1974-01-17
Abstract: 1459241 Measuring liquid level electrically VAPOR CORP 17 Jan 1974 [21 June 1973] 02215/74 Heading G1N A system providing a digital indication of for example the level of liquid in a storage tank utilizes position-encoding coarse and fine potentiometers 20a, 19a coupled to a float, the signals from which are converted 32 from analog to BCD form and the least significant digit C of the coarse measurement, which represents units of the measurement, is corrected in accordance with the most significant digit F of the fine measurement under the following conditions: (i) F# 5 and (ii) C< 5 and (iii) |F-C|# 5 (if |F-C|< 0 add 10 to F); then decrease F by 1: or (iv) F< 5 and (v) C > 5 and (vi) |F-C|< 5; then increase F by 1: or if conditions (i), (ii) and (iii) or (iv), (v) and (vi) cannot be met then the coarse measurement is left unaltered. Figs. 6, 7 (not shown) illustrate the logic blocks required to generate the +1 or -1 correction signal and to apply it to the count.
Patent GB-162087-A (GB)
Title: Improvements in mud splash guards for taxi cabs and like vehicles
IPC: B60B7/00
Filed: 1920-08-16
Abstract: 162,087. Spiers, W. B. Aug. 16, 1920. Mud-guards carried by wheels.-An annular member D of slightly less diameter than the tyre is moulded in one-piece with the tyre and a metal collar in one or more pieces is fitted around the connecting part B. The rim may be extended as shown by the dotted line C to protect the mud-guard.